Fire-preventing and fire-extinguishing agent



Patented June 1933 omen: s TATES innate PATENT @FFHQE KARL DAIMLER, or rRA'NKEoRnoN-rHE- ArN-Hocnsrr, GERMANY, AssIeNoR, BY MEsNE ASSIGNMENTS, T GENERAL ANI INE woRKs, INQ, on NEW YORK, 1\T.' Y., A

CORPORATION or DELAWARE FIRE-PREVENTING ANDZ FI E-ExrINeUIsnING AGENT No Drawing. Application filed December 4, 1928, Serial No. 323,797, and in Germany December 10, 1927.

The present invention relates to new fire-- preventing and fire-extinguishing agents.

It is known that inflammable bodies can be made fireproof by impregnating them with sodium sulfate, ammonium sulfate, ammonium bromide, sodium bicarbonate, phosphates, borates or the like.

I have now found that by adding to the above mentioned or similar dressing and impregnating agents, which are to be used in an dium salt of the said kind is added to a mixture of iron salts and sodium carbonate capable of forming foam by itself, the properties of said foam, in particular its stability and resistance to heat, are extremely improved, whereby the efficiency of the foam-mixture in extinguishing fires is considerably intensified. have also found that when one of the above-- mentioned sulfonic acids or their salts are added to the already known fire-extinguishing emulsions, for instance, to a carbon tetrachloride emulsion in water, which very often become resolved before or while they are used for the purpose in question, these emulsions are brought into a more stable and considerable more efficacious and fire-resisting form.

The following examples serve to illustrate my invention but they are not intended to limit it thereto:

(1) 90 parts of ammonium chloride and 10 parts ofammonium benzylnaphthalenesulfonate prepared from one molecular proportion of naphthalene, one molecular proportion of benzylchloride, 2 molecular proportions of sulfuric acid and neutralization of the product of the reaction by means of ammonia) are intimately mixed, the'result- :ingmixture being used as a dressing and impregnating agent fer making the material in question fire-proof. Theimpregnationis effected by dipping the substances to be made fire-proof into a bath of 20% strength, orby applying a 10% to 20% solution with a brush upon'the surface of the material to be made fire-proof. The thorough impregnation of wood is done with a solution of 20% strength while applying-pressure or pressure and a vacuum alternately. After the material has been impregnated,it is dried.

(2) An extinguishing foaming powder is prepared by mixing 56 parts of commercial aluminum sulfate, 4-2 parts of commercial sodium bicarbonate and 2 parts of sodium extinguishing powder 'fit for use, it is mixed with water, which is preferably done in a suitable foam-generator intercalculated into the foam conduit. The powder may, however, also be used for filling therewithhand fire extinguishers of known construction, in which case the access to the powder of the water, which is also contained in the extinguisher, is effected only at the moment when the extinguisher is used. Another method of using the substances in question is to dissolve the bicarbonate and the aluminum sulfate separately, while adding the sulfonate to one of the solutions or to both solutions, then storing these solutions separately and,

case of an outbreak of fire,'to mix them 'with each other whereby the foam is produced which is then projected on the fire.

' (3) 2 parts of ammonium butylnaphtha lenesulfonate are dissolved in 98 parts of carbon tetrachloride. This solution is dispersed in 10 -100 parts of water so as to obtain an emulsion suitable for being used for fireextinguishing purposes.

, (4) 80 parts by weight of ammonium brovmide are mixed with 20 parts by weight of equivalents. fire-extinguishing agents are applied to the I sionsl small quantity of water and neutralized by means of ammonia whereupon the'resulting salt is dried and pulverized. The mixture thusobtained is employed for the prepara- I tion of baths with which objects, for instance 'coulisses or the like are impregnated in order to render them fire-proof. The objects may also be impregnated by sprinkling the solu-' tions upon them, for instance'by means of a revolving spray.

V The expression known, water-compatible, firenhibiting substances, used in the appended claims, is intended to include those known fire inhibiting substances. specifically mentioned in the foregoing description, i. e.

'sodiulnsulfa-te, ammonium chloride, ammoniumisulfate, ammonium bromide, aluminum sulfate, sodium bicarbonate, phosphates, bo-

rates and carbon tetrachloride, and their My new fire-preventing and inflammable material in conjunction with water, either in solution or emulsion (hence water-compatible). Obviously, the above I claim: 1

. Afire-prevent-ing and fire-extinguishing v. agent consisting of aluminum sulfate, sodium butyl naphthalene sulfonate, said composition being capable of forming aqueous solutions or emulsions.

In testimony whereof, I affix my signature.

KARL DAIMLER.

defined expression is not intended to include I water itself.

bicarbonate and sodium butylnaphthalene' sulfonate.

2. As a fire-preventing and fire-extinguish- 1 ing agent, a composition of matter comprising at least one of the known, water-compatible, fire-inhibiting substances and a comd pound of vthe general formula B.SO .X wherein R stands for an. alkylated or aral- I .kylated aromatic residue and X stands for- H, NIL, Na or K, said composition being capable of forming aqueous solutions or emulsions.

3. As a fire-preventing and fire-extinguishing agent, a composition of matter comprising at least one of the known, water-com- V p atible, fire-inhibiting substances and a compound of the general, formula R.SO .X

whereinlR stands for an alkylated or arals kylated naphthalene nucleus and X stands for H, NIL, Naor K, said composition being capable'of forming aqueous solutions or emul- 4. As a fire-preyenting and fire-extinguishing agent, a composition of matter comprisj I ingat least one of theQknown, water-com-' patible,fire-inhibiting substances and sodium 

